<?php
/*
 * 运算符
 */
//$number1 = 10;
//$number2 = 3;
//echo $number1 + $number2;
//echo '<br/>';
//echo $number1 - $number2;
//echo '<br/>';
//echo $number1 * $number2;
//echo '<br/>';
//echo sprintf("%.2f", $number1 / $number2);
//echo '<br/>';
//echo $number1 % $number2;
//$number1 = 10;
//$number2 = 3;
////$number1--;
//$number1 += $number2; // $number1 = $number1 + $number2;
//echo $number1;

$str1 = 'hello';
$str2 = 'php';
$str3 = $str1 . ' ' . $str2;
echo $str3;









